Mobile terminal apparatus, base station apparatus, and radio communication method for cell discovery timing

Abstract

A user equipment is disclosed including a first receiving section that receives control information in a first cell and a second receiving section that receives a detection signal in a second cell based on the control information. In the second cell, the control information is used to specify a radio resource to which the detection signal is allocated.

The invention claimed is: 
     
       1. A user equipment comprising:
 a first receiver that receives control information in a first cell, the control information including a transmission interval of a detection signal; and 
 a second receiver that receives the detection signal in a second cell based on the control information, 
 wherein:
 in the second cell, the control information is used to specify a radio resource to which the detection signal is allocated and 
 in the second cell, the transmission interval of the detection signal is set wider than a transmission interval of a synchronization signal used in the first cell and is set to be variable. 
 
 
     
     
       2. The user equipment according to  claim 1 , wherein in the second cell, the detection signal is allocated to the radio resource of a wider time and/or frequency range than the synchronization signal used in the first cell. 
     
     
       3. A base station apparatus that communicates in a second cell with a user equipment configured to communicate in a first cell and the second cell, the base station apparatus comprising:
 a receiver that receives control information from a base station apparatus that forms the first cell, the control information including a transmission interval of a detection signal; 
 a processor that generates a detection signal based on the control information; and 
 a transmitter that transmits the detection signal to the user equipment, 
 wherein:
 in the second cell, the control information is used to specify a radio resource to which the detection signal is allocated and 
 in the second cell, the transmission interval of the detection signal is set wider than a transmission interval of a synchronization signal used in the first cell and is set to be variable. 
 
 
     
     
       4. A radio communication method comprising the steps of:
 receiving control information in a first cell, the control information including a transmission interval of a detection signal; and 
 receiving the detection signal in a second cell based on the control information, 
 wherein:
 in the second cell, the control information is used to specify a radio resource to which the detection signal is allocated and 
 in the second cell, the transmission interval of the detection signal is set wider than a transmission interval of a synchronization signal used in the first cell and is set to be variable.